Soil-water catch basin and heat reclaimer



Nov, 25, 1930. F. s. BOLTZ SOIL WATER CATCH BASIN AND' HEAT RECLAIMER Filed Feb. 23, 1928 B MWIWCWM c/ tarne'ys.

PatentedNor- 25 ,1930 I I a r 1,783,033 i 1 FRED s. aoil'rzior MANSFIELD, MAssadnusnfrtbs soII;-wATE3'cArroH Asnt Nn HEA RECLAIMER Application filedFebruary'23,'1$28.SerialjNo. 256,126;

The invention relates to apparatus for pointed out and clearly defined in the claims utilizing: the heat of'waterwhichhas already at the close-of this specification. a

i been heated andused anjdiwhich is usually In the drawings :j 1 2 allowed to run to waste,such aswater wvhich Fig. 1.is a plan viewof one form of ap- 5 hfLSPQIf'OIIHGCl its function in'a laundry,dyeparatus-embodying the invention. a p i house, Woolscouring'plant or elsewhere, The Fig. 2 is a Vertical section} on line 22,

present invention is aniinprovernent on an Fig. 1. a :3

application i-filedv by me February 17, 1926, i Fig. 3 is a sectionyon line 3-3, Fig. 1. a

and sincethen issued as Patent No. 1,689,993. Referring to the drawings, there is shown 3 "Apparatus embodying the invention corna heating apparatus consisting "of a lrollow 6Q prises a catch basin for the hot soilwater ylindrie le l 0 havi g e Sheets 1 and aheattransfer elementWhichinits preand 12 at its upper ELIldlOWQI ends respecferred for n consists} of a shellhavingtuber tlv ly a d tubes 13 e tending through the sheets at its opp'ositeiendsandtubesextendfshell and; connected with the'tl l e heets, the

ingthroughtheshell and connectedwith said said tubesubeing open at eachendto the inl sheets,saidtubesbeing openat their ends to 0f Catch basin f whichit -the soil water in the catch basin in combina- S i. i i 9 tion witlrmeans fcrintroducing fresh cold l W r f m he atch basin Water into the shell so that the clean Water W n rth tubes 1 at h 1 1 6 e s, 20 comes in contact With the hot soil Water tubes it being a t th 110i soil Waterin and is heated thereby and then is delivered to basln 1 be o i'fi pt so a some point outside Where the fresh clean h upp r 'face ofthesoilwat'er'w 10 Water thus heated isto be used. 1 y h above t p hfthe tubes? The WELSCB Water in the catch basin Will, An nl tpip 14 the fre h Water Which 25 after a tiine forln a surface scuin. The heatis to he fi enters t e e l 0 hrough 7 M ing surface at the top of the shell or heat eX- an inlet p ur in h Y 0f the Shah hear, tractor and the inner Walls ofthe tubes gradthe lower nd thereof, l above t lower ually collect a surface film of grease and dirt b Sheet 12 dellvels Clean ater into i Which retards heat transfer. It is important Saul h- The Clean 001d e t s intro i.

0 tO IGITIOWB this surface scum and film from W111 circulate around the tubes th time totime in order to obtain the bestre- 111 h shehahd p s P l Q t h sults froin the heat transfer element; As the Watel: Outlet 5 gh he i l of the normal level of the Waste Water is above the h l t below the upper tube sheet' ll, The 7 top of the heattransfer-element Which durfresh Water ll b heated y. ta 3 ing. the normal operation is whellyinnnersed h t tubes er heated y il 9 in the soil Water, itisimportant to drain l e h hat S 1 l h enters h h the soil Water from the catch-basin sufficient xx h P 19 id 1y to eiipose the top of the heat extractor so th 3 fi fi fiQf 5 3 2 15 T l that the upper tube sheet can be cleaned and W Q 9 h Set't mg r v r to the bottom of the catch baslniwlll becar- 9o also to perm t a tube cleaner to be inseited ried frommhe lower artlrof the basin u int'oandthrough the tubes for cleaning the Ward to h upper 5 of the catch b i inneriiwalisi q h h fi lb s' feature l f filt a point higher than the top of the shell P lnventlon of a scum and thence ill be dischargedto the sewer or a: 4 draw off anddrain toenable the cleaning of th 'itabl placemfi delivery; This overthe heat aet i d fioW pi'pe23is open at its lower end to the The invention" willv be fully understood soil Water in the lower part of the. catch frorn the following description When taken basinkand extends upward Withinithe catch in cennection Withjthe accompaiiying draw basin but outside of the shell 10 to a point 5-3 ,ings andthe novel features thereof Will be somewhat above the normalletel of the hot soil water in the basin and is open at its upper end. The normal level of the soil water is shown at a and the upper end of the overflow pipe is shown at 2st.

Projecting from one side of the overflow pipe near the upper end thereof is a chamber which forms an enlargein ,nt of the upper portion of the pipe said chamber having a closed bottom. A vertical. partition or baflle 26 separates said chamber from the main body of the pipe 23 and extends up to about the normal level of the waste water but not to the full height of said pipe 23. This baffle plate forms a dam over which the waste water as it rises in the overflow pipe can flow into said chamber 25. The chamber '25 has an upward extension 35 having an outlet pipe 27.

After the warm waste water in the upper part of the heat extractor and catch basin has given off its heat, it sinks or settles to the bottom of the catch basin while the incoming hotwaste water remains at the top. The pressure of the incoming hot waste water at the top will force the cooled waste water at the bottom up through the overflow pipe and thence out through the discharge passage to the sewer.

As it is desirable to maintain a head of water over the heat extractor or transfer element, the overflow pipe extends upward to a point higher than the top of the beat extractorI In the apparatus shown in the drawings, as already described, the cold waste water flows over the baflle 26 near the upper end of the overflow pipe and drops down into the chamber whence it passes down through the outlet 27.

One feature of the present invention consists of a scum draw-oil and drain to enable the cleaning of the heat extractor.

In order to provide means for lowering the level of the water in the catch basin suihciently for the purpose of drawing oil the scum and cleaning the heat extractor, I have provided a valve in the side of the chamber 25 at some distance below the top of the overflow pipe so that when the said valve is open, the water in the upper part or" the catch basin can flow directly into the side chamber 25 and thence to the outlet .27 without first going over the top of the 'bafi'le. The form of the valve shown in the drawings is a slide valve 30 which slides in ways 31 in the side of the chamber 25. This valve may be operated by a handle 32 which extends above the normal level of the waste water in the catch basin so that it may be easily reached and operated by hand when the cover of the catch basin is removed. Any other suitable valve, however, may be employed. p

The opening in the side of the chamber 25 which is'controlled by said valve extends below the top of the heat reclaime'r, that is,

below the upper tube sheet 11 in the apparatus shown in the drawings so that the level of the waste water may be lowered sufliciently to expose the top of the heat reclaimer and the entrance to the tubes. The most of the scum on the surface of the waste water will run off into the overflow pipe, when the level of the waste water falls to the level of the valve opening. During the time that the valve is open and the level of the soil. water is below the top of the heat reelaimer the top of the shell can be cleaned and suitable tube cleaning devices can be inserted into the tubes to clean the inner walls of the tubes.

After the scum has been drawn of? and the tubes have been cleaned the slide valve 30 should be closed again.

It is desirable to seal the entire catch basin so that odors or fumes can not escape from the catch basin intothe building in which it is located and I have provided means for that purpose. This means consists of a water seal trap in the waste water overflow pipe. To provide for this trap the portion of the chamber 25 from which the outlet pipe 27 leads is mad-e air tight by a cap 3 1- and a vertical partition 33 which extends down below the outlet 27. This branch portion 35 of the chamber may be formed as an upward bend in the overflow pipe. This trap will prevent foul air in the catch basin from escaping into the building by way of the sewerage connection.

A blow-ofl' pipe 17, whose lower end is open to the interior of the shell 10 near the bottom of the tube sheet 12, extends up through the upper tube sheet to a point above the normal level of the waste water and is connected with a pipe 18 which extends in a horizontal plane above the shell, and is then connected with a pipe 19 which extends down outside of the shell. but within the basin to a point below the lower end of the shell. It is there connected with a pipe 20 having a plurality of apertures 21. A blow-oil valve 22 isconnected with the pipe 18, and is normally kept closed. By opening the said valve 22 the pressure of the incoming cold water through the inlet pipe 1st will cause a current through the shell 10 to the open lower end of the pipe 17, thence up through the pipe 17 and the various extensions thereof, thence through the apertures 21 toward the open lower end of the overflow pipe 23. This will. set up a current in the lower part of the catch basin toward the open lower end of the overflow pipe, and

cause an upward flow through the pipe 23 to the chamber 25, thence to the outlet 27.

I claim:

1. An apparatus of the character described comprising a soil water catch basin, a she l mounted in said basin. said shell having tube sheets at its top and bottom and a plurality of tubes connecting said sheets, said tubes bea, ing open at their ends to soil water in the basin, means for introducing clean water into (said shell and into contact'with said tubes,

f discharge outlet.

means for discharging the clean vwater from 5 said shell to a point outside of said basin, an

overflow discharge pipe extending from the cglowerpart of said basin to a point higher thanthetop vof the said shell, a discharge outlet from the overflow pipeland a water seal trap between the overflow pipe and the 2. An apparatus of the character described comprising a soilwater catch basin, a shell mounted in said basin having tube sheets at "its top "andbottomand a plurality of tubes connecting said sheets, said tubes being open at their ends to soil water 111 the basin, means tor mtroduclng clean water under pressure into said shelland into contact with said tubes, means for discharging theclean water from said shell to a polnt outside of said basln, an overflow discharge pipe extending from the lower part of said basin. toa part' j of the basin higher than the top of the said shell,a siphon brow-0s pipe, one leg of which is open at its lower-end to-the lower part of the interior of the clean water shell and which extends out of said shell to a point above the clean water shell and is there connected with another leg of the siphon which extends down i into the lower part of the waste water basin,

said other leg having at its lower end a portion open to the interior of the catch basin, and,

bomprising a soil water catchbasin, a soil water heat reclaimer shell mounted therein,

said shell having tube sheets at the top-and bottom and tubes open at the ends to soil water 1n the b35111, means for lntroduclng clean water into said shell,a discharge pas-;

sage for the clean water from the shellto a point outside of the basin, an overflow discharge pipe extending from the lower part to the upper part ofthe basin, said pipe having an inlet opening into the lower part of thebasin and having an outlet at some dis tance above the top of said shell, a chamber into which said overflow pipe normally discharges, said chamber also having an inlet thereto directly from the catch basin sufficiently below the outlet from the overflow pipe to permit lowering the level of the soil water to expose the top of said heat reclaimer, avalve for closing at will said inlet from the basin to said chamber and a discharge out- I let from said chamber.

4. Apparatus of the character descri ed 'trollable at willwhereby when said "valve comprising a soil water catch basin, a heat re claimer j shell within said basin having pas sages therethrough open to the soilgwater in the basin, means for causinga flow of clean water. into andout of said shell without mingling with thesoil water, a'soil water overflow pipe extending iron the lower part of the basinto apolntat some distance above the top of the heat reclaimehfsaid pipehaw ing antinlet theretoin; the lower part of the basin, an outlet from; said discharge pipe above the heatreclaimer, anoutlet from the saidcatch basin below the top of the heat'lreclaimer, and a valve to said lower outlet conopened, the soil 'water will be discharged through said lower outletand the level of the soil water in the basin may be lowered tothe top of the heat reclaimer shell and when said .valve is closed the soil water will have its charge through the overflow pipe. 5. Apparatus of the character described; comprising a SOll water catch basln, a shell mounted in saidcatchkbasin,"rhaving'tube sheets at its ends and apluralityof tubes connecting said sheets, the tubes being open at their ends to soilwaterin the ;basin, means for introducing clean water into said shell and" into contact with saidtubes, means for dischargingthe cleanlwater from saidsh'ell to a; point outside: said catch basin," an over flow discharge pipe for the soil water lea-d ing from the lower part of the catch basinto a point above the to of said shell, a chamber intowhich the over ow pipe discharges, said chamber having an inletthereto from the catch basinbelow the top of the said shell, said chamber .also having anfoutlet "and a valvewhich controls said inlet to the chamber whereby when said valve is open the soil waterin'the upper partof the basin is discharged into said chamber and the soil, water I in the basin may therebybe lowered sufliciently to expose the top of said shell; I a a 6.= Apparatus of the character described claimer shell-mounted in said catch basin having tube-sheets at its ends and a plurality of tubes connecting said sheets, the tubes being i open at their ends to soil water in the basin, means for introducing, clean water under pressure into said shell and into contact with said'tubes, means for then discharging the to a point outside said catch basin, an over flow discharge pipe for the soil water extend comprising a soil water catch basin, a heat reclean water under pressure from said shell,"

ing from the lower part of the catch basin to a point higher than the top of said shell, a siphon blow-off pipe, one leg of whichis open at its lower end to the lower part of the interior of the clean water shell and which extends out of said shell to a point above the clean water shell and is there connected with another leg of, the siphon which extends down into the lower part ofthe Wast Water basin, said other leg having at its lower end a portion open to the interior of the catch basin, and a valve which controls the passage through said siphon, the pressure of said clean water introduced into the shell and thence though said siphon into the catch basin when said valve is open being adapted to normally force the soil water and entrained contents up tl rough said overflow pipe, a chant her into which the overflow pipe discharges,

said chamber having an inlet thereto from the catch basin below the top of the said shell, and a valve which controls said inlet to the chamber whereby when said valve is open the soil water in the upper part of the basin is discharged directly into said chamber and the soil water in the basin may thereby be lowered sufficiently to expose the top of said shell.

7. An apparatus of the character described comprising a catch basin for hot soil water and a receptacle for clean water so arranged with relation to each other that the hot soil water transfers heat to the clean water, means whereby the soil water and the clean water are prevented from intermingling, an overflow discharge pipe extending ulnvardfrom the lower part of the soil water receptacle and having a discharge outlet at a point higher than the level of the water in the clean Water receptacle, and a water seal trap between the overflow pipe and the discharge outlet.

8. An apparatus of the character described comprising a catch basin for hot soil water and a receptacle for clean water so arranged with relatlon to each other that the hot soil Water transfers heat to the clean water through the Wall of one of said receptacles, means whereby the soil water and the clear water are prevented from interminglirrg, an overflow discharge pipe extending upward from the lower part of the soil water receptacle and having a discharge outlet at a point higher than the level of the water in the clean water receptacle, and a water seal trap be tween the overflow pipe and the discharge outlet.

In testimony whereof I afix my signature.

* FRED S BOLTZ. 

